_____he sure that the train will arrive at two o'clock?

_____he sure that the train will arrive at two o'clock?
______ he sure that the train will arrive at two o'clock?
does is do can
是哪个?
答对了送100分
英语人气:992 ℃时间:2019-10-19 08:15:33
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is
be sure that表示确信...
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